Low blood pressure, defined as a reading below 90/60 mmHg, only needs attention when it causes symptoms like dizziness, lightheadedness, or fainting. Even a drop of just 20 mmHg from your normal reading can trigger these symptoms. If your low blood pressure is making you feel unwell, there are several practical steps you can take, ranging from immediate physical techniques to longer-term lifestyle changes.
Quick Moves to Raise Blood Pressure Right Now
When you feel a wave of dizziness or lightheadedness coming on, specific muscle-tensing techniques can push blood pressure up within seconds. These work by squeezing blood from your limbs back toward your heart and brain.
- Leg crossing: Cross one leg over the other and squeeze the muscles in your legs, abdomen, and buttocks. Hold this position until your symptoms pass.
- Arm tensing: Grip one hand with the other and pull them against each other without letting go, as if trying to pull your hands apart. Hold as long as you can or until you feel better.
- Handgrip: Squeeze a rubber ball (or anything firm) in your dominant hand for as long as you can.
These techniques are recommended by the Cleveland Clinic specifically for people prone to fainting episodes. They’re not a cure, but they can buy you enough time to sit down, get water, or move to a safer position.
Increase Salt and Fluids
Unlike people managing high blood pressure, you may actually benefit from more salt. Johns Hopkins Medicine recommends 3 to 5 grams of salt daily for people with chronically low blood pressure, paired with at least 60 to 100 ounces of fluid per day. That fluid target is roughly 8 to 12 cups. The two go hand in hand: salt helps your body retain water, which increases blood volume, which raises blood pressure. But increasing salt without enough water can backfire, so always keep fluid intake high when adding salt to your diet.
Practical ways to boost salt include adding it liberally to meals, snacking on salted nuts or pretzels, drinking broth, or using electrolyte drinks. If plain water feels like a chore, flavored water or diluted sports drinks count toward your daily total.
Prevent Blood Pressure Drops After Meals
Blood pressure commonly dips after eating, especially after large, carb-heavy meals. This happens because your body diverts blood to your digestive system, temporarily pulling it away from the rest of your circulation. If you notice symptoms after meals, several strategies can help.
Eating six smaller meals instead of three large ones reduces the demand on your digestive system at any one time. Keeping those meals lower in carbohydrates also helps. Drinking 12 to 16 ounces of water before a meal can preload your blood volume, and having a caffeinated beverage before breakfast or lunch provides an additional short-term boost. A 10-minute walk after eating encourages blood flow back through your body rather than letting it pool in your gut. If walking isn’t an option, lying down after a meal can also help stabilize your pressure.
Use Compression to Fight Blood Pooling
When you stand, gravity pulls blood downward into your legs and abdomen. For people with low blood pressure, this pooling can worsen symptoms significantly. Compression garments counteract this by physically squeezing blood back up toward your heart.
The abdomen is actually the biggest source of blood pooling when standing, so Vanderbilt University Medical Center recommends targeting it first. An abdominal binder or supportive back brace that you can loosen while sitting and tighten when standing is a good starting point. For the legs, compression stockings that provide 30 to 40 mmHg of pressure and extend to the waist are the most effective. Knee-high stockings help less because they miss the thighs, where much of the pooling occurs.
Adjust How You Sleep
Raising the head of your bed by about 9 inches (roughly a 10-degree tilt) can improve morning blood pressure. This works through a somewhat counterintuitive mechanism. When you sleep completely flat, blood returns more forcefully to your heart, which can trigger your kidneys to produce more urine overnight. That fluid loss shrinks your blood volume, leaving you more prone to dizziness and drops in blood pressure when you get up in the morning. Sleeping at a slight incline reduces this overnight fluid loss, so you start the day with more blood volume and better tolerance for standing.
You can achieve this by placing bed risers or sturdy blocks under the legs at the head of the bed. Pillows alone don’t work as well because they bend your neck rather than tilting your whole body.
Check Your Medications
Several common types of medication can lower blood pressure as either their intended effect or a side effect. Blood pressure drugs are the obvious culprits, but diuretics (water pills), certain antidepressants, medications for prostate issues, and drugs for Parkinson’s disease can all contribute. If you’re experiencing low blood pressure symptoms and take any of these, the timing of your doses may matter. Some people find that shifting medications to later in the day, or avoiding them right before meals, reduces symptoms. Any changes to medication timing or dosing should be discussed with whoever prescribed them.
Prescription Options for Persistent Symptoms
When lifestyle changes aren’t enough, medications designed specifically to raise blood pressure are available. The most commonly prescribed option works by tightening blood vessels throughout the body, increasing both blood flow back to the heart and overall vascular pressure. A typical dose raises standing blood pressure by 15 to 30 mmHg within about an hour. It’s usually taken three times during the day, with the last dose in the late afternoon, because lying down after taking it can push blood pressure too high. Another class of medication works by helping the kidneys retain salt and water, which expands blood volume over time.
These medications are generally reserved for people whose symptoms significantly affect daily life, particularly those who faint regularly or can’t stand without dizziness despite trying other strategies.
Symptoms That Need Urgent Attention
Mildly low blood pressure that causes occasional lightheadedness is common and manageable. But a sudden, significant drop in blood pressure can signal something more serious, like internal bleeding, a severe allergic reaction, or an infection spreading through the bloodstream. Seek emergency care if low blood pressure is accompanied by confusion, cold or clammy skin, rapid shallow breathing, a weak and rapid pulse, or if you lose consciousness. These signs suggest your organs may not be getting adequate blood flow, which is a medical emergency rather than something to manage at home.